January weather forecastSouth Chatham, MA
January
Weather in January
January, like December, in South Chatham, Massachusetts, is an icy winter month, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 31.6°F (-0.2°C).Temperature
During January and February, South Chatham experiences its lowest temperatures, averaging a high-temperature of 39°F (3.9°C).Humidity
In South Chatham, the average relative humidity in January is 75%.Rainfall
In January, the rain falls for 9.5 days. Throughout January, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In South Chatham, during January, snow falls for 6 days and regularly aggregates up to 1.34" (34mm) of snow. Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 34min.On the first day of January, sunrise is at 7:06 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:53 pm EST.
Sunshine
In South Chatham, the average sunshine in January is 4.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 2 in January leads to these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
South Chatham, MA
- Average high temperature in January: 39°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
- Average low temperature in January: 31.6°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in January
South Chatham, MA
- Average pressure in January: 29.99"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
South Chatham, MA
- Average wind speed in January: 18mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in January
South Chatham, MA
- Average humidity in January: 75%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in January
South Chatham, MA
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in January
South Chatham, MA
- Average rainfall days in January: 9.5 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in January
South Chatham, MA
- Average snowfall in January: 1.34"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
South Chatham, MA
- Average snowfall days in January: 6 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
South Chatham, MA
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in January
South Chatham, MA
- Average sunshine days in January: 13 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index in January
South Chatham, MA
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
South Chatham, MA
- Average cloud cover in January: 52
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
South Chatham, MA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
